How to get store information in Magento?
Get store data
Mage::app()->getStore();
Store Id
Mage::app()->getStore()->getStoreId();
Store code
Mage::app()->getStore()->getCode();
Website Id
Mage::app()->getStore()->getWebsiteId();
Store Name
Mage::app()->getStore()->getName();
Store Frontend Name (see @Ben's answer)
Mage::app()->getStore()->getFrontendName();
Is Active
Mage::app()->getStore()->getIsActive();
Homepage URL of Store
Mage::app()->getStore()->getHomeUrl();
Current page URL of Store
Mage::app()->getStore()->getCurrentUrl();
All of these functions can be found in class Mage_Core_Model_Store
File: app/code/core/Mage/Core/Model/Store.php
To get information about the current store from anywhere in Magento, use:
<?php
$store = Mage::app()->getStore();
This will give you a Mage_Core_Model_Store object, which has some of the information you need:
<?php
$name = $store->getName();
As for your other question about line number, I'm not sure what you mean. If you mean that you want to know what line number in the code you are on (for error handling, for instance), try:
<?php
$line = __LINE__;
$file = __FILE__;
$class = __CLASS__;
$method = __METHOD__;
$namespace = __NAMESPACE__;
Great answers here. If you're looking for the default view "Store Name" set in the Magento configuration:
Mage::app()->getStore()->getFrontendName()